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ASTM A449

Scope

ASTM A449 covers headed bolts, rods, and anchor bolts in diameters ranging from 1/4" through 3" inclusive. It is a medium strength bolt manufactured from a medium carbon or alloy steel that develops its mechanical values through a heat treating process. It is intended for general engineering applications.

ASTM A449 is virtually identical in chemistry and strength to ASTM A325 and SAE J429 grade 5. However, A449 is more flexible in the sense that it covers a larger diameter range and is not restricted by a specific configuration.

TYPES

TYPE 1

Plain carbon steel, carbon boron steel, alloy steel, or alloy boron steel.

TYPE 2

Withdrawn 2003

TYPE 3

Weathering steel.

 

MECHANICAL PROPERTIES

Size

Tensile, ksi

Yield, ksi

Elong. %, min

RA %, min

1/4 - 1

120 min

92 min

14

35

1-1/8 - 1-1/2

105 min

81 min

14

35

1-5/8 - 3

90 min

58 min

14

35

RECOMMENDED NUTS and WASHERS

Nuts

Washers

Plain

Galvanized

1/4 - 1-1/2

1-5/8 - 3

1/4 - 3

A563B Hex

A563A Heavy Hex

A563DH Heavy Hex

F436

Note: Nuts of other grades having proof load stresses greater than the specified grade are suitable.


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